The company said that smartphone traffic to e-commerce sites grew by more than 62 percent and revenue grew 141 percent. Tablet revenue and traffic grew by a more modest 20 percent. Though still dominant, PC-based commerce growth “continued its decline.”

PCs generated 57 percent of traffic to e-commerce sites but were responsible for 76 percent of revenues in the aggregate. Smartphones drove 28 percent of traffic but only 11 percent of revenue. Tablets generated 15 percent of traffic and 13 percent of revenue.

The gap between smartphone traffic and conversions is a function of the fact that m-commerce experiences are typically suboptimal. Accordingly and as part of the broader mobile traffic shift, MarketLive reported an overall 2 percent decline in conversions vs. a year ago. Shopping cart and checkout abandonment were both higher as well, up almost 3 percent and almost 7 percent respectively.

Organic search traffic drove 31 percent of visits overall and 26 percent of conversions, while paid-search generated 18 percent of traffic and 22 percent of revenues in the aggregate.

Traffic from email marketing was responsible for 13 percent of visits and 15 percent of conversions, said MarketLive in its report. By comparison social media referrals were responsible for 2 percent of traffic and 1 percent of conversions. Even though social’s impact was marginal compared to the other channels, MarketLive characterized it as a “small but important shift in how shoppers are influenced.”

About The Author

Greg Sterling is a Contributing Editor at Search Engine Land. He writes a personal blog, Screenwerk, about connecting the dots between digital media and real-world consumer behavior. He is also VP of Strategy and Insights for the Local Search Association. Follow him on Twitter or find him at Google+.